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Jeeserssweesers(for a lack of a better word), probability is confusing.
A family has three children, no twins or.. that same just with three.
a| What is the chance that all the children are girls.
The chapter here shows the equtations P(a)+P(b)=P(a)xP(b), but my problem here maybe is that I don't find the use of that in this question.
This questions looks just like the same to me when you throw three coins and ask what the chance is for that you get three on one side(?). So I get 2(boy or girl)x2x2= 8 possible outcomes. And getting three on one side is one out of these 8 outcomes, same with getting three girls. So that gives: 1/8. (=0.125). But in my book the result shows 0.115.
Homework Statement
A family has three children, no twins or.. that same just with three.
a| What is the chance that all the children are girls.
Homework Equations
The chapter here shows the equtations P(a)+P(b)=P(a)xP(b), but my problem here maybe is that I don't find the use of that in this question.
The Attempt at a Solution
This questions looks just like the same to me when you throw three coins and ask what the chance is for that you get three on one side(?). So I get 2(boy or girl)x2x2= 8 possible outcomes. And getting three on one side is one out of these 8 outcomes, same with getting three girls. So that gives: 1/8. (=0.125). But in my book the result shows 0.115.